When i hit the littest bump, my low trac light,servive vechicle

Those lights are for a wheel bearing i have done the job myself but if youre gonna replace 1 you might as well do both of the front wheel bearings and the lights disappear. wheel bearings run 70 a piece.

I've got an 02 GT and ran into the same EXACT prob. The dealer says my wheel speed sensor is not working..(unresponsive). Don't recall the price of replacement sensor/installation since I did not get it fixed. Now that you know the problem, I'd say shop around!

Hey, loose the Grand Am unless you have deep pokets ((money)). I owned a 00 Grand Am and I also hit bumps and sensors would apear and I pay the dealer to inspect and they love money I can tell you that. there are lists of problems that occur on these types of car and brakes are one of them, so is the head gasket, no offence but you need to grade from this beautiful car, I really like the look of the car but the engine has a bad rep for failure.